HP 713979-B21 COMP 8GB DDR3-1600MHZ ECC DRX8 UDIMMAddOn 8 GB DDR3 SDRAM Memory Module 8 GB (1 x 8GB) DDR3 1600 PC3 12800 DDR3 SDRAM 1600 MHz Dual rank Memory CL11 1. 35 V ECC Unbuffered 240 pin UDIMM Lifetime Warranty VPN: 713979 B21 AM SKU: RSC212473 UPC: 821455230015 8 GB capacity is enough to execute all memory hungry programs simultaneously 1600 MHz memory speed with Unbuffered signal for great multitasking capability DDR3 SDRAM interface multiplexes 2 bit data from memory cell and I O buses to